package wang.Second;

public class StringBuilder55 {
    public static void main(String[] args) {
        StringBuilder sb=new StringBuilder();
       sb.append("abc");
       sb.append("123123123123123123123123123123");
        String string = sb.toString();
        System.out.println("string = " + string);
        String abc = "abc"+"";

        System.out.println(sb.capacity());
        System.out.println(sb.length());
        System.out.println(sb);

    }
}
